code: def main():
      segmentation()
  
file_path: megatron-lm/tasks/vision/segmentation/finetune_segformer.py
imports: import numpy
  import torch
  import torch.nn.functional
  from functools import partial
  from megatron import get_args, get_timers
  from megatron import print_rank_0, print_rank_last
  from megatron.core import mpu
  from tasks.vision.finetune_utils import finetune
  from tasks.vision.finetune_utils import build_data_loader
  from megatron.utils import average_losses_across_data_parallel_group
  from megatron.schedules import get_forward_backward_func
  from tasks.vision.segmentation.data import build_train_valid_datasets
  from tasks.vision.segmentation.seg_models import SegformerSegmentationModel
  from megatron.model.vision.utils import resize
label_desc: Use image node_id 4 for calling a global function with example usage: main() without return types